Lathe-tool.



No. 690,208. Patented Dec. 3|, l90l. G. S. VANSTONE.

LATHE TOOL.

(Application filed Nov. 6, 1900.]

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UNITED STATES PATENT OFFICE.

GEORGE SAMUEL VANSTONE, OF PROVIDENCE, RHODE ISLAND, AS-

SIGNOR TO HIMSELF AND BENJAMIN WARREN, OF PROVIDENCE,

RHODE ISLAND.

L ATH E-TOO L.

SPECIFICATION forming part of Letters Patent No. 690,208, dated December 31, 1901- Application filed November 6, 1900- Serial No. 35,675. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE SAMUEL VAN- STONE, a citizen of the United States, residing at Providence, in the State of Rhode Island, have invented a new and useful Improvement in Lathe-Tools, of which the following is a specification.

My improvement relates to that class of lathe-tools which are especially adapted for use as side tools, thread-cutting and cuttingoff tools, and the like; and it consists in the combination of the cutting-blade with a removably-attached reinforcing-plate,whereby an efficient lathe-tool may be readily constructed which will not require subsequent forging or tempering to keep it in order.

In the accompanying drawings, Figure 1 represents the top view of a right and left hand side tool embodying my improvement. Fig. 2 represents the back side view of the tool. Fig. 3 represents a view of the cutting side- Fig. 4 represents a section taken in the Fig. 5 represents the top View of a deflected right and left hand side tool. the same. Fig. 7 represents a section taken in the line 7 7 of Fig. 6. Fig. 8 represents the top view of a double-ended thread-cutting tool. Fig. 9 represents atrausverse section taken in the line 9 9 of Fig. 8. Fig. 10 represents the top View of a cutting-off tool. Fig. 11 represents a transverse section taken in the line 11 ll of Fig. 10.

In the drawings, Figs. 1, 2, 3, and 4:, A represents a cutting-blade made of flat steel and formed with a beveled upper edge a and having its opposite ends forged into the proper shape for use as a side tool and provided at its side with the screw-threaded perforations b b. To the side of the cutting-blade A is secured the removable reinforcing-plate B, which is perforated to receive the attaching-screws c c, the said plate beingmade adjustable toward either end of the cuttingblade by moving the screws 0 c from one of the screw-threaded perforations b to another, or the reinforcing-plate B may be provided with the slots cl d, as shown in Fig. 6. The re- Fig. 6 represents the back side view of' inforcing-plate B is beveled at its upper and lower edges e andf, as shown in Figs. 4 and 7, to provide the proper clearance for the cutting-face of the cutting-blade, and the points of the cutting-blade A (shown in Fig. 5) are oppositely deflected to provide a side tool adapted for special purposes, or the ends may be deflected in the same direction as shown by the dotted lines.

In Fig. 8 is shown a Hat cutting-blade A, adapted for. cutting a screw-thread, the said blade being secured to the side of the reinforcing-plate B by means of the screws 0.0 and the check-nuts c c, a cross-section of the thread-cutting tool being shown in Fig. 9, in which the upper and lower edges are shown as at right angles with the sides.

In Figs. 10 and 11 is shown a cutting-off tool made of the wedge-formed cutting-blade A, secured to the reinforcing-plate B, so that the beveled side g of the cutting-blade will be parallel with the side g of the reinforcingplate B, the bevel of the sides of the cuttingblade A providing the proper degree of clearance when the tool is in use. I

The blades A and the reinforcing-plates B being made of the same width or height allows the tightening-screw of the tool-post of the lathe to bear upon both parts, which is a feature of my invention.

I claim as my invention- 1. In a lathe-tool, the combination of the cutting-blade, and the adjustable screw-attached reinforcing-plate made of the same height as the cutting-blade, the upper and lower bearing edges of the cutting-blade and the reinforcing-plate lying in the same horizontal plane, substantially as described.

2. In a lathe-tool the combination of the cutting-blade and the screw-attached reinforcing-plate made of the same height as the cutting-blade, and having their'bearing edges beveled for producing the required clearance of the tool substantially as described.

Gr. SAMUEL VANSTONE.

Witnesses:

WILLIAM J. ROBINSON, GEORGE W. OATES. 

